The head of Ukraine Petro Poroshenko and German Chancellor Angela Merkel discussed the implementation of the Minsk agreement and started the meeting of the foreign Ministers 'channel four," said the press Secretary of the Ukrainian President to the United States. "Poroshenko and Merkel discussed the state of the Minsk agreement. We began the meeting of Ministers of foreign Affairs "channel four," wrote Tsigalko in his own microblog on Twitter.